Lubricating device



Dec. 20, 1938. L. A. CARTER 2,140,983

LUBRICATING DEVICE Filed May` 18, 1935 TOENEY.

I Patented' Dec. 20, 1938 UNITED STATES PATENT clericsv 2,140,983 LUBRICATING DEVICE Lionel A. Carter, Webs/ter Groves, Mo. Application May 18, 193'5,A Serial No. 22,149 s chime. (ci. isi-s) This invention relates to the lubrication of the and the pump for actuating said pump whenever" ways of lathes, planers or the like. The principal said carriage is moved. As shown in the drawobject of the present invention is to devise means ing, said connection comprises an arm I1 pivoted operated by the movementof the carriage for on a stud I8 for vertical swinging movement on assuring positive lubrication of the ways along the front wall of the oil tank 6 and provided-at 5 .which the carriage and cross-slide move; respecits .free end with a Shaft I3, one end of which tively. Other objects are to prevent building up i extends beneath the lathe bed I and has a wheel of excessive lubricant pressure and to provide for 20 xed thereto. The shaft I9 is jOllrlleled in simplicity and cheapness of construction and suitable antifriction bearings 2l provided therecompactness of design. The invention consists for in the rock arm I1 and is provided at its other l0 inthe lubricating device and in the combinations end with an eoeentrically disposed pin 22 that and arrangements of parts hereinafter described Seats in e hole provided therefor in the lower and claimed. end of a link 23 whose upper end is-pivotally con- In the accompanying drawing, which forms nected, as at 24, to hollow cylindrical sleeve part of this specication and wherein like symbols or cap 25 sleeved on-a reduced upper end portion 15 refer to iike parts wherever lthey occur, 8a of the pump piston 8. The' cylindrical cap 25 Fig. 1 is a, fragmentary rear elevation of the iS held 0n the piston 8 by nuts 26 threaded 0n the bed, carriage and cross-slide of a lathel provided upper end thereof; and a helical compression with a lubricating device embodying my invenspring 21 is sleeved on the reduced upper end portion, tion 8a of said piston betweenthe upper end of 20 Fig. 2 is a vertical cross-section on the line 2-2 Seid Cep and a Shoulder 8b formed by Seid Iein Fig. l, duced portion of said piston.

Fig. 3 is an venlarged vertical @ress seetion on The wheel 20 fixed to the shaft I9 journaled in the line 3 3 in Fig, 1; and the free end of the rock arm I1 is pressed against 25 Fig. 4 is a. vertical section on the line li-e in the underside of the bed 2 of the lathe. preferably 2s Fig. 3. by means of a helical compression spring. 28,

In the accompanying drawing, my invention is mounted in a bore 29 provided therefor in said shown in connection with a lathe comprising a erm between the ends thereOf- The SlJrihg` 28 bed I, provided with' longitudinal ways or guides rests on a lug 30 provided therefor on the adja- 30 2, along which a. carriage 3 moves, and a member cent wall of the oil tank 6; and a threaded plug v30 or cross-slide 4movab1e transversely of the longi- 3l closes the upper end of said bore and rests tudinal carriage ways on ways 5 provided therefor upon the upper end 0f Said Spring on said carriage. According to the present in- BY the arrangement described, the Wheel 20 vention, the ways upon which the carriage 3 and treVelS With the Carriage 3 and iS rotated by cross-slide 4 move are lubricated by means of a means 0f the friction between the Wheel and 85 .device comprising an 011 reservoir 0r tank xed underside 0f the bed. Tll'ning 0f the friction' to one ange of an angle-shaped bracket 1 whose Wheel rotates its Supporting'shaft I9 in the arm other flange is bolted atwise tothe rear face ef I1 and thus causes the eccentric pin 22 to revolve said carriage. The oil is delivered from the tank about the Sha-ft aXS and impart e reCPrOCetn 4o 6 to the ways 2 and 5, preferably by means of a movement to the pump piston 8 through the linkv 4o pump comprising a. plunger or piston 8 that re- 23 and cap 25 and thus force the oil through the ciprocates in an upright cylinder S located in fitting i2, pipes I3 and the passager/eye i4 t0 the said tank and is provided with suitable springy Ways 2 for the Carriage 3 and the Ways 5-for the pressed, inlet and discharge valves I0 and II, cross-slide 4. The coil spring 21 between the' respectively. Oil from the discharge valve vII is DiStOh and the Cap therefor is adapted to yield 45 forced through a suitable T-fitting I2 and thence after the Dump has built up Suflieient pressure upwardly through pipes I3 into passageways I4 t0 Supply the Proper amount 0f 'Oil i10 the Ways, formed in the carriage 3 beneath the cross-slide tlierelir preventing further reCiPXOCetlOh 0f the ways 5 thereon. As shown inthe drawing, oil is Dump Pisten Until the pressure falls belOW that supplied to the ways 5 for the cross-slide 4 required to compress said spring. y This spring 50 through upwardly extending branches I5 Vof the also permits continuous rotationof the friction passageways I4; and oil is supplied to the ways 2 wheel 23 in the idle position of the piston and for the carriage through downwardlyrextending thus'prevents fiat spots from being worn on the branches-IG of said passageways. peripheral surface of Said wheel.

A connection is provided between the carriage Obviously. the hereinbefore described construc- 55 departing from the invention. Therefore. I do not wish to be limited to the precise arrangement shown and described.

What I claim is: v l

1. In a machine tool, the combination of a bed having a way, a carriage movable along said way, and means operated by the movement of said carriage along said way ior lubricating the 10 latter, said means comprising a pump mounted on said carriage and adapted to supply oil to said way, a wheel rotatably sustained by and mov- `able withsaid carriage with its periphery in'rolling contact with said bed, and a lyieldable con- 15 nection between said wheel and said pumpfor ,actuating the latter, whereby locking of said wheel againstrotation is prevented when the pump\ pressure has built up to a point preventing operation of the pump.

2. Ina machine tool, the combination of a bed having a way,- a carriage movable along said way, andl means operated by the movement .of said carriage along said way for lubricating the latter, said means comprising apump mounted 25 onsaid carriage and adapted to-supply oil to said way, a wheel rotatably sustained by said Vcarriage with its periphery inl rolling contact with said bed, and a connection Vbetween said wheel and said pump for continuously operating er throughout the' entire range of movement of said member up to a predetermined lubricant pressure, said connection permitting rotation of said wheel when the pump pressure has built up to a point preventing .operation of the pump.

3. In a machine tool, bed having a way, a carriage movable along said way, said carriage being provided with a way, a cross-slide movable along said last mentioned way, and means operated by the movementkkof said carriage for lubricating the ways along which the carriage and cross-slide move, respec- Y tively, said means comprising a pump mo ted on'said carriage in position to supply oil to the respective ways,'a. wheel rotatably sustainedby said carriage with its periphery in rolling contact with said-bed, and a yieldable connection between said wheel and saidpumpl for actuating the latter whereby locking of said wheel against rotation is prevented when-the pump pressure has built up to a point preventing operation of the pump. 4. In a machine tool, the combinationoi' a bed having a way, .a carriage movable along said way, and means operated by the movement of .said carriage along said way lfoilubricating the latter, said means'comprising an oil tank fixed to'said carriage, a reciprocatingipump mountedl in said tank with its inlet in communication with said tank and with its outlet leading to said way,

bed," and a yieldable connection between said` wheel and said pumpfor actuating the latter 5` whereby locking of said wheel against rotation isv prevented whenv the pump pressure has builtup to a point preventing operation of the pump.

2,140,983 tion 'admits of .considerable modincation without.

the combination `1 of a its periphery in frictional contact with said bed,

and a connection between said wheel and said pump for continuously actuating the latter throughout the entire range of movement of said member up to a predetermined lubricant pressure, said connection permitting rotation of said Wheel when the pumprpressure has built up to a point preventing operation of the pump.

6. The combination of a support having a way, a member movable along saidway, and means operated by the movement of said member along 'p20 said way for lubricatingthe latter, said means comprising a.. pump mounted on said member in position to supply oil to said wa said pump including a reciprocating piston, an arm movable with said member, a shaft rotatably sup-J ported by said arm, a wheel fixed to said shaft with its peripheral surface in rolling contact with .the underside of said supporting member, an eccentric pin on said shaft,V a member mounted on said piston, and a link-connection-between saidmember and vsaid eccentric pin.

7. The combination of a support having a way, a member movable along said Way, and means operated by the movement of said member along said way for lubricatingthe latter, said means comprising a pump mounted on said member in position to supply oil to -said way, said pump including a reciprocating piston, a spring supported arm pivoted to an'd movable-With said member, a shaft journaled on' the free end of said arm, a wheel xed to said shaft and frictionally engaging the underside of said supporting member, an eccentric pin on said shaft, a cap sleeved on said piston, nuts threaded on said piston for holding said cap thereon, a link connection between said cap and said eccentric pin, and a coil spring sleeved on said-piston between said cap and a shoulder on said piston.

8. The combination of a bed having a way. a carriagemova'ble along said way, and means .operated by the movement of said vcarriage along said way,v for lubricating the latter, said means comprising an oil tank xed to-said carriage,

fa pummmounted on said tank with its inlet in communication therewith fand with its outlet 5 leading to said way, said pump including a reciprocating piston, an arm pivoted to and movable with said carriage, a shaft journaled inthe free end of said arm, a'wheel xed to said shaft .and frictionally engaging the underside of said '60 bed, an eccentric pin, on said shaft, a cap sleeved on said ipiston, nuts on said piston in abutting relation to the outer end of s aid cap, a.' link connection between s'aid cap and said eccentric pin,

and a coil spring interposed between the outerendof said cap and a shoulder on said piston.

` LIONEL A. CARTER. Y 

